A genus native to Africa containing about four hundred species of flowering succulent plants.
One of the larger genera in the Cactus family, and one of the most variable. This month we will show off our collections of Mammillaria straight spined clusters.
Three related genera from Africa.
Columnar cacti are not a closely related set of genera, but a lumping together of all the cacti that are much longer than they are around.
A genus of at least 28 species of small clumping leaf succulents from South Africa.
A small (but growing) genus of small plants from Northeastern and Central Mexico.